TY  - JOUR
AU  - de Valk, V.
TI  - A problem on $0-1$ matrices
JO  - Compositio Mathematica
PY  - 1989
SP  - 139
EP  - 179
VL  - 71
IS  - 2
PB  - Kluwer Academic Publishers
UR  - http://archive.numdam.org/item/CM_1989__71_2_139_0/
LA  - en
ID  - CM_1989__71_2_139_0
ER  -